They had been reinforced on the way, and they now numbered 366 fighting ships. Those of Sparta and the Peloponnesus were 89, the Athenian fleet 180, while 97 more were supplied by the Greek islands, some of the ships from Melos and the Cyclades being penteconters, large vessels whose long oars were each manned by five rowers. Losses by storm and battle had reduced the Persian armada to some six hundred effective ships. The odds were serious, but not desperate. But while the Persian fleet was directed by a single will, there were divided counsels among the Greeks. Eurybiades had most of the leaders on his side when he argued that Athens was hopelessly lost, and the best hope for Greece was to defend the Peloponnesus by holding the isthmus of Corinth with what land forces could be assembled and removing the fleet to the waters of the neighbouring waters to co-operate in the defence. Themistocles, on the other hand, shrank from the idea of abandoning the refugees in the island of Salamis, and he regarded the adjacent straits as the best position in which the Greeks could give battle. There, as in the channel of Euboea, the narrow waters would do something to nullify the Persian advantage of numbers. For the Greeks, formed in several lines extending from shore to shore, could only be attacked by equal numbers. Only the leading ships of the attack would be in action at any given moment, and it would not matter how many hundred more were crowded behind them. With a column of spearmen on land the weight of the rearward ranks, formed in a serried phalanx, would force onward those in front. But with a column of ships formed in several successive lines in narrow waters any attempt of the rearward ships to press forward would mean confusion and disaster to themselves and those that formed the leading lines. This would have been true even of ships under sail, but in battle the war galleys were oar-driven, and as the ships jammed together there would be entangled oars, and rowers flung from their benches with broken heads and arms. Better discipline, more thorough fighting-power on the Greek side, would mean that the leading ships of their fleet would deal effectually with their nearest adversaries, while the rearward ships would rest upon their oars and plunge into the mêlée only where disaster to a leading ship left an opening.